Windows bat compare strings

Same can be used to tranlate a day-of-the-week short string into a day-of-the-week long string by changing the map content only. The example here shows how to extract the parts of a date. The string substitution feature can also be used to remove a substring from another string. The example shown here removes all occurrences of "the " from the string variable str. To replace a substring with another string use the string substitution feature.

The example shown here replaces all occurrences "teh" misspellings with "the" in the string variable str. If the condition specified in an if clause is true, the command that follows the condition is carried out.

If the condition is false, the command in the if clause is ignored and the command executes any command that is specified in the else clause. When a program stops, it returns an exit code.

To use exit codes as conditions, use the errorlevel parameter. You must use the else clause on the same line as the command after the if. To display the message Cannot find data file if the file Product. To format a disk in drive A and display an error message if an error occurs during the formatting process, type the following lines in a batch file:.

Viewed k times. What am I doing wrong? Improve this question. Dave Jarvis Add a comment. Active Oldest Votes. Improve this answer. Uwe Keim Frank Bollack Frank Bollack Use NEQ instead. I pulled this from the example code in your link: IF! Thanks jatrim.. Most definitely helpful for those searching for an answer, rather than asking the question again.

Connect and share knowledge within a single location that is structured and easy to search. I tried echoing! If you want to check if a variable contains only letters you could use findstr , like this:. The variable is echoed and then piped to the findstr command, which will use a regular expression to match alphabetical characters:.

The findstr output will be then redirected to nul , thus ignored. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more.